CVE-2026-33762
LOW2.8EPSS 0.01%Missing validation decoding Index v4 files leads to panic in github.com/go-git/go-git
Published: 3/30/2026Modified: 4/28/2026
Description
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.
Affected packages (5)
- Debian/golang-github-go-git-go-gitfrom 0
- Go/github.com/go-git/go-gitfrom 0
- Go/github.com/go-git/go-git/v4from 0
- Go/github.com/go-git/go-git/v5from 0, < 5.17.1
- Go/github.com/go-git/go-git/v5from 0, < 5.17.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L |